/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:28:05,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:28:05,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:28:05,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:28:05,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:28:05,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:28:05,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:28:05,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:28:05,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:28:05,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:28:05,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:28:05,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:28:05,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:28:05,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:28:05,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:28:05,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:28:05,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:28:05,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:28:05,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:28:05,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:28:05,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:28:05,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:28:05,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:28:05,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:28:05,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:28:05,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:28:05,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:28:05,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:28:05,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:28:05,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:28:05,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:28:05,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:28:05,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:28:05,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:28:05,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:28:05,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:28:05,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:28:05,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:28:05,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:28:05,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:28:05,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:28:05,429 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:28:05,491 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:28:05,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:28:05,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:28:05,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:28:05,496 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:28:05,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:28:05,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:28:05,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:28:05,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:28:05,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:28:05,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:28:05,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:28:05,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:28:05,498 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:28:05,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:28:05,498 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:28:05,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:28:05,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:28:05,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:28:05,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:28:05,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:28:05,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:28:05,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:28:05,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:28:05,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:28:05,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:28:05,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:28:05,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:28:05,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:28:05,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:28:06,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:28:06,032 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:28:06,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:28:06,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:28:06,041 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:28:06,042 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-25 14:28:06,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37e9eff98/322e33f51a154cb3b58f3c092b7a69e0/FLAG4bde6308f [2020-09-25 14:28:06,684 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:28:06,685 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-25 14:28:06,695 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37e9eff98/322e33f51a154cb3b58f3c092b7a69e0/FLAG4bde6308f [2020-09-25 14:28:07,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37e9eff98/322e33f51a154cb3b58f3c092b7a69e0 [2020-09-25 14:28:07,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:28:07,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:28:07,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:28:07,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:28:07,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:28:07,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:28:07" (1/1) ... [2020-09-25 14:28:07,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c1a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:07, skipping insertion in model container [2020-09-25 14:28:07,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:28:07" (1/1) ... [2020-09-25 14:28:07,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:28:07,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:28:07,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:28:07,425 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:28:07,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:28:07,589 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:28:07,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:07 WrapperNode [2020-09-25 14:28:07,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:28:07,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:28:07,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:28:07,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:28:07,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:07" (1/1) ... [2020-09-25 14:28:07,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:07" (1/1) ... [2020-09-25 14:28:07,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:07" (1/1) ... [2020-09-25 14:28:07,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:07" (1/1) ... [2020-09-25 14:28:07,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:07" (1/1) ... [2020-09-25 14:28:07,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:07" (1/1) ... [2020-09-25 14:28:07,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:07" (1/1) ... [2020-09-25 14:28:07,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:28:07,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:28:07,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:28:07,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:28:07,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:28:07,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:28:07,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:28:07,761 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 14:28:07,761 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-25 14:28:07,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-25 14:28:07,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:28:07,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:28:07,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 14:28:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 14:28:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-25 14:28:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 14:28:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 14:28:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:28:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:28:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 14:28:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:28:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-25 14:28:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:28:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:28:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-25 14:28:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:28:08,612 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:28:08,613 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-25 14:28:08,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:28:08 BoogieIcfgContainer [2020-09-25 14:28:08,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:28:08,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:28:08,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:28:08,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:28:08,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:28:07" (1/3) ... [2020-09-25 14:28:08,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e653e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:28:08, skipping insertion in model container [2020-09-25 14:28:08,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:07" (2/3) ... [2020-09-25 14:28:08,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e653e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:28:08, skipping insertion in model container [2020-09-25 14:28:08,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:28:08" (3/3) ... [2020-09-25 14:28:08,631 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-09-25 14:28:08,643 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:28:08,655 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:28:08,677 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:28:08,710 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:28:08,711 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:28:08,711 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:28:08,711 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:28:08,711 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:28:08,711 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:28:08,712 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:28:08,712 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:28:08,741 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states. [2020-09-25 14:28:08,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 14:28:08,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:08,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:08,754 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:08,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:08,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1608489446, now seen corresponding path program 1 times [2020-09-25 14:28:08,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:08,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546961766] [2020-09-25 14:28:08,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:08,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:09,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:09,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:09,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:28:09,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:09,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-25 14:28:09,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:09,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:09,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:09,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 14:28:09,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:09,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:28:09,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:09,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:09,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:09,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:09,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:09,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 14:28:09,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:09,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:09,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:09,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:09,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:09,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:09,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 14:28:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:09,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:09,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:09,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:09,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 14:28:09,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:09,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:28:09,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:09,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:09,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:09,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:28:09,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:09,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:28:09,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546961766] [2020-09-25 14:28:09,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:28:09,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:28:09,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718897145] [2020-09-25 14:28:09,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:28:09,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:09,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:28:09,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:28:09,442 INFO L87 Difference]: Start difference. First operand 221 states. Second operand 4 states. [2020-09-25 14:28:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:10,039 INFO L93 Difference]: Finished difference Result 415 states and 505 transitions. [2020-09-25 14:28:10,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 14:28:10,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 14:28:10,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:10,058 INFO L225 Difference]: With dead ends: 415 [2020-09-25 14:28:10,058 INFO L226 Difference]: Without dead ends: 213 [2020-09-25 14:28:10,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:28:10,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-25 14:28:10,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-09-25 14:28:10,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-25 14:28:10,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 240 transitions. [2020-09-25 14:28:10,129 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 240 transitions. Word has length 46 [2020-09-25 14:28:10,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:10,130 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 240 transitions. [2020-09-25 14:28:10,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:28:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 240 transitions. [2020-09-25 14:28:10,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 14:28:10,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:10,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:10,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:28:10,135 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:10,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:10,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1262573606, now seen corresponding path program 1 times [2020-09-25 14:28:10,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:10,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186896577] [2020-09-25 14:28:10,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 14:28:10,248 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 14:28:10,249 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 14:28:10,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:28:10,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:28:10 BoogieIcfgContainer [2020-09-25 14:28:10,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:28:10,295 INFO L168 Benchmark]: Toolchain (without parser) took 3250.53 ms. Allocated memory was 137.9 MB in the beginning and 230.2 MB in the end (delta: 92.3 MB). Free memory was 100.8 MB in the beginning and 129.0 MB in the end (delta: -28.2 MB). Peak memory consumption was 64.0 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:10,296 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-25 14:28:10,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 541.39 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 99.9 MB in the beginning and 174.9 MB in the end (delta: -75.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:10,298 INFO L168 Benchmark]: Boogie Preprocessor took 77.28 ms. Allocated memory is still 199.8 MB. Free memory was 174.9 MB in the beginning and 171.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:10,299 INFO L168 Benchmark]: RCFGBuilder took 952.93 ms. Allocated memory is still 199.8 MB. Free memory was 171.9 MB in the beginning and 123.5 MB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:10,300 INFO L168 Benchmark]: TraceAbstraction took 1669.94 ms. Allocated memory was 199.8 MB in the beginning and 230.2 MB in the end (delta: 30.4 MB). Free memory was 123.5 MB in the beginning and 129.0 MB in the end (delta: -5.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:10,304 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 541.39 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 99.9 MB in the beginning and 174.9 MB in the end (delta: -75.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.28 ms. Allocated memory is still 199.8 MB. Free memory was 174.9 MB in the beginning and 171.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 952.93 ms. Allocated memory is still 199.8 MB. Free memory was 171.9 MB in the beginning and 123.5 MB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1669.94 ms. Allocated memory was 199.8 MB in the beginning and 230.2 MB in the end (delta: 30.4 MB). Free memory was 123.5 MB in the beginning and 129.0 MB in the end (delta: -5.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 245 SDtfs, 45 SDslu, 184 SDs, 0 SdLazy, 266 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 3510 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...